Electrum Personal Server is an implementation of the Electrum wallet server protocol that allows users to point their Electrum wallet at their own full node. It is compatible resource-saving features like pruning, blocksonly and disabled txindex. It is much less resource-intensive than other Electrum servers because it only stores the user's own addresses, instead of every address that was ever used. As such it makes tradeoffs, namely losing Electrum's "instant on" feature.
Right now using Electrum Personal Server is the easiest way to use a hardware wallet backed by your own full node. It is very lightweight, being a small python script that barely uses any CPU or RAM; much less than the full node it's connected to. Hopefully Electrum Personal Server can be part of the solution in putting full node wallets into the hands of as many people as possible. The project is now in beta release: https://github.com/chris-belcher/electrum-personal-server It now has all the essential features to make it practical for use; Merkle proofs, deterministic wallets, bech32 addresses, SSL, Core's multi-wallet support. Along with the features that were in the alpha release of tracking new transactions, confirmations, block headers, importing addresses. There is a caveat about pruning. Electrum Personal Server obtains merkle proofs using the `gettxoutproof` RPC call, if pruning is enabled and that block has been deleted then the RPC will return null and so the Electrum wallet will display `Not Verified`. Everything else will still work, and this shouldn't be a problem in most situations because Electrum usually only requests merkle proofs for recent transactions and pruning keeps recent blocks. But in the long term it needs some thought on the best way to fix this. I've been thinking about adding code for Bitcoin Core that stores merkle proofs for each of the wallet's own transactions in wallet.dat. Further Reading: * https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2018-February/015707.html * https://bitcointalk.org/index.php?topic=3167572.0 _______________________________________________ bitcoin-dev mailing list bitcoin-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
